In my experience, having multiple people own a thing means that no-one owns it. Usually what happens is that officially "we all own this", but unofficially "if

In my experience, having multiple people own a thing means that no-one owns it. Usually what happens is that officially "we all own this", but unofficially "if you touch this without consulting Sharon, she'll be pissed off". Or it gets dumped into the "no-one wants to touch that, if it goes wrong we have to coerce someone to go fix it, badly, and late" bucket.